Serhiy Storchaka added the comment:
Path.resolve() also fails when last link is absolute.
mkdir testdir
ln -s 0/0 testdir/1
ln -s 1/1 testdir/2
ln -s "$(readlink -f testdir)" testdir/0
Path('testdir/2').resolve() fails:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/serhiy/py/cpython/Lib/pathlib.py", line 1017, in resolve
s = self._flavour.resolve(self)
File "/home/serhiy/py/cpython/Lib/pathlib.py", line 273, in resolve
raise RuntimeError("Symlink loop from %r" % cur)
RuntimeError: Symlink loop from '/home/serhiy/py/cpython/testdir/0'
Here is a patch which implements an algorithm similar to the algorithm used in
posixpath.realpath().
----------
keywords: +patch
priority: low -> high
stage: -> patch review
Added file: http://bugs.python.org/file32987/pathlib_resolve.patch
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<http://bugs.python.org/issue19887>
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